Two phone numbers that provide the correct local and global time are 202-762-1401 and 719-567-6742. The U.S. Naval Observatory, which holds its Master Clock operations in Washington, D.C. and Colorado Springs, Colorado, supports both numbers.
The USNO numbers use a voice announcer to state the current time. Users can hear the local time on the minute and every 15, 30 and 45 seconds. The Coordinated Universal Time repeats every five seconds, in between each declaration of the local time. Some phone numbers, such as those that radio stations maintain, provide the temperature and weather in addition to the current time.